Home › Geomagnetic history › 1977

Geomagnetic storm on 7 Apr 1977 (G3)

Max Kp7-G3

Ap48No. 8 in 1977

Consecutive G1+ days3

Ap rank1,026since 1932

Kp by 3-hour slot (UTC)

00–037-

03–066o

06–095+

09–124o

12–154+

15–183-

18–215+

21–243-

The days around it

Date	Max Kp	Ap	Level
4 Apr 1977	5+	24	G1
5 Apr 1977	4-	12	–
6 Apr 1977	7o	49	G3
7 Apr 1977	7-	48	G3
8 Apr 1977	5-	27	G1
9 Apr 1977	4+	22	–
10 Apr 1977	4-	13	–

Highest-Ap days of 1977

2 Dec 197769

2 May 197766

21 Sep 197764

22 Sep 197763

27 Oct 197762

29 Jul 197761

6 Apr 197749

7 Apr 197748

19 Apr 197748

28 Oct 197747

Dates and time slots are UTC. Kp is the 3-hourly planetary geomagnetic index (0–9); Ap is the daily average disturbance. G1–G5 follow the NOAA storm scale (Kp 5- and above counted as G1). Aurora visibility also depends on weather and location. The latest values are preliminary.

← 6 Apr 1977 29 Jul 1977 →

About this page

Max Kp 7-, Ap 48: No. 1,026 of 34,615 days since 1932 by Ap.